Patents by Inventor Stuart Eadow-Allen

Stuart Eadow-Allen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Machine for forming a curved surface on a workpiece
    Patent number: 4059925
    Abstract: A machine for cutting material from a lens blank to form a curved surface has a rotatable cutting wheel and a chuck for supporting the blank. The chuck is mounted for movement in three mutually-orthogonal directions relative to the cutting wheel and respective motors are provided for displacing the chuck in two of these directions to cause the cutting wheel to traverse the surface to be formed on the blank. Two templates and respective followers are provided for controlling movement of the chuck in the third direction in accordance with movement in the first and second directions. The position of the chuck relative to the follower elements can be adjusted to enable a lens with a selected thickness to be formed and one of the follower elements can be adjusted to enable different curvatures to be obtained from a single template.
    Type: Grant
    Filed: January 27, 1976
    Date of Patent: November 29, 1977
    Assignee: Dollond & Aitchison (Services) Limited
    Inventor: Stuart Eadow-Allen